Optical transdermal linking method for transmitting power and a first data stream while receiving a second data stream
First Claim
1. A method for transmitting power and a first data stream while receiving a second data stream, the method comprising the steps of:
- providing power to an external module, the external module located external to biological tissue;
modulating, according to the first data stream, an external optical transmitter, of the external module, thereby driving the external optical transmitter and causing the external optical transmitter to transmit a modulated first data stream optical signal;
receiving the modulated first data stream optical signal from the external optical transmitter using an internal optical receiver of an internal module embedded within the biological tissue and converting the modulated first data stream optical signal into a first data stream modulated electrical signal;
extracting the first data stream from the modulated first data stream electrical signal;
providing the first data stream as output from the internal module;
extracting power from the modulated first data stream electrical signal to power an internal optical transmitter of the internal module;
modulating the internal optical transmitter according to the second data stream thereby driving the internal optical transmitter and causing the internal optical transmitter to transmit a modulated second data stream optical signal;
receiving the modulated second data stream optical signal using an external optical receiver of the external module and converting the modulated second data stream optical signal into a second data stream modulated electrical signal;
extracting the second data stream from the modulated second data stream electrical signal; and
providing the second data stream as output from the external module.
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Abstract
An optical transdermal link. The interface consists of two modules. An internal module is placed just inside the skin, and an external module is placed just outside the skin and facing the internal module. The external module is connected to a host processor via high speed serial lines. The external module contains one or two laser diodes with drivers, and one photodetector with preamplifier. The internal module contains a photocell array to provide power for itself, a photo detector, preamplifier and a clock recovery circuit for detecting the incoming signal, and a laser diode and driver for the outgoing signal. The internal module also contains modulation/demodulation and neural interface circuits peculiar to the specific application.
121 Citations
17 Claims
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1. A method for transmitting power and a first data stream while receiving a second data stream, the method comprising the steps of:
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providing power to an external module, the external module located external to biological tissue; modulating, according to the first data stream, an external optical transmitter, of the external module, thereby driving the external optical transmitter and causing the external optical transmitter to transmit a modulated first data stream optical signal; receiving the modulated first data stream optical signal from the external optical transmitter using an internal optical receiver of an internal module embedded within the biological tissue and converting the modulated first data stream optical signal into a first data stream modulated electrical signal; extracting the first data stream from the modulated first data stream electrical signal; providing the first data stream as output from the internal module; extracting power from the modulated first data stream electrical signal to power an internal optical transmitter of the internal module; modulating the internal optical transmitter according to the second data stream thereby driving the internal optical transmitter and causing the internal optical transmitter to transmit a modulated second data stream optical signal; receiving the modulated second data stream optical signal using an external optical receiver of the external module and converting the modulated second data stream optical signal into a second data stream modulated electrical signal; extracting the second data stream from the modulated second data stream electrical signal; and providing the second data stream as output from the external module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for transmitting power and a first data stream while receiving a second data stream, the method comprising the steps of:
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providing power to an external module, the external module located external to biological tissue; transmitting optical power from an optical power transmitter of the external module; receiving the transmitted optical power using a photo array of an internal module embedded within the biological tissue and converting the transmitted optical power into electrical power to power an internal optical transmitter of the internal module; modulating an external optical signal transmitter of the external module according to the first data stream thereby driving the external optical transmitter and causing the external optical transmitter to transmit a modulated first data stream optical signal; receiving the modulated first data stream optical signal from the external optical transmitter using an internal optical receiver of the internal module and converting the modulated first data stream optical signal into a first data stream modulated electrical signal; extracting the first data stream from the modulated first data stream electrical signal; providing the first data stream as output from the internal module; modulating the internal optical transmitter according to the second data stream thereby driving the internal optical transmitter and causing the internal optical transmitter to transmit a modulated second data stream optical signal; receiving the modulated second data stream optical signal using an external optical receiver of the external module and converting the modulated second data stream optical signal into a second data stream modulated electrical signal; extracting the second data stream from the modulated second data stream electrical signal; and providing the second data stream as output from the external module. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification